Rear mirror



FIG. 1 is a front view of a rear mirror showing my new design;

FIG. 2 is a left perspective view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right rear side perspective view thereof;

FIG. 6 is a rear side view thereof; and,

FIG. 7 is a top view thereof.

The broken lines illustrate portions of the rear mirror that form no part of the claimed design. 

CLAIM The ornamental design for a rear mirror, as shown and described. 